Compressed Air Desiccant Dryer Range
Innovative design. Exceptional engineering. Improved performance
Introducing a new generation of Desiccant Dryers
with optional Dewpoint Management Control
Walker Filtration is one of the leading manufacturers of high efficiency
compressed air filtration and drying equipment.
At Walker Filtration we take pride in our world-class reputation for designing,
developing, and manufacturing products of superior technical performance.
Delivering high quality, well-engineered filtration and drying solutions since
1983, all of our products are designed and manufactured on site at our state of
the art 12000 m² headquarters in the UK.
With a portfolio encompassing both industrial and medical products, our
complete product range illustrates the diverse capabilities and expertise of
Compressed air is a versatile and important power source. The requirement
for a compressed air supply to be clean, dry and contaminant free is crucial
to ensuring safe, efficient and profitable operation and manufacturing. Any
form of moisture or contamination in a compressed air line has the potential
to cause costly downtime, machine damage and product spoilage. The Walker
Filtration product range, designed and tested to international air quality
standards, ensures that compressed air is delivered contaminant free, to exacting
specifications, required for the end use.
Compressed air filtration and drying solutions must deliver uncompromising
performance and reliability. Ensuring that a compressed air system delivers the
required air quality for the end application is crucial to successful daily operation.
The more energy required to produce clean, dry and reliable compressed air,
the greater the cost. Therefore, installing and maintaining the correct filtration
and drying solutions for your compressed air system is critical to guaranteeing
optimum performance and ensuring that energy costs are kept to a minimum.
Whatever the application
We have the dryer solution for you
The Need for Clean and Dry Air
Walker Filtration’s range of PROSFD desiccant dryers deliver optimum
performance and provide a compressed air drying solution you can
count on. With built in energy saving features across the range, the
PROSFD series of heatless regenerative dryers has been designed to
incorporate an energy management system which allows the dryers to
be linked with a compressor control system to reduce air consumption
during periods of low demand – greatly reducing energy consumption
and improving energy e�ciency.
improved serviceability are central to PROSFD’s design, as downtime
Optional Dewpoint Management Control, �exible installation and
associated with servicing and installation not only e�ects productivity
but also directly impacts upon costs.
The PROSFD range of heatless desiccant dryers delivers uncompromising
performance and air quality. Constructed using extruded aluminium
towers which are fully anodised for corrosion protection, this
distinguished range of high e�ciency dryers
has been designed and tested to meet the purity classes
speci�ed by ISO 8573-1: 2010
All dryers are built to be fully compliant with
international standards and have multiple voltage
options, suitable for worldwide installation.
Innovation and sound engineering is at the heart of Walker Filtration and
focuses all that we do. Continued investment in research and development,
new technologies and the latest test standards, allows us to meet the highest
demands of both the end user and the OEM customer. Our commitment
to exceptional and innovative design, along with a proven track record of
engineering excellence, enables us to remain at the forefront of compressed air
�ltration and drying technology.
For more than 30 years, Walker Filtration has built a reputation of high quality,
well-engineered �ltration and drying products. Founded on sound engineering
principles, we continually invest in technology and expertise to stay at the
leading edge of innovation. By utilising the latest technology in computer aided
design and combining this with the extensive knowledge of our engineering and
technical team, we have become the partner of choice and are proud to work
with OEM customers on an international scale.
With in-house test facilities and sophisticated on-site laboratories at our UK and
USA locations, performance is guaranteed.
Innovative Product Design
At Walker Filtration our customers’ needs are always paramount - we pride
ourselves on our customer focused approach and exceptional levels of service.
Our approach is straightforward – we enjoy what we do, working with our
customers and o�ering competent advice and sound engineering. With
dedicated technical, sales, and support teams globally, we are well placed to
ensure a rapid response and fast delivery. We deliver not only highly speci�ed
standard product ranges, but also customised solutions designed speci�cally for
our client’s needs.
Walker Filtration products can be
found in virtually any industry where
compressed air is used.
4 to 360 scfm (7 to 612 Nm
The PROSFD range of desicant dryers, with 17 models, provides �ow rates from
³/hr). This modular series o�ers a robust and reliable
compressed air drying solution.
Designed to suit various applications, the PROSFD range consists of our proven
existing low �ow models PD004-PD035, and our new and improved larger
�ow models PD0046-PD0360. Utilising the latest in drying technology, this
technically advanced range of highly e�cient desiccant dryers delivers a compact
solution to moisture removal from compressed air.
Whatever your requirement, PROSFD’s exceptional performance can deliver - the
features and bene�ts of PROSFD ensure almost every application need is met.
Critical ApplicationsHigh Quality Applications
Beverages & Breweries
Paper & Printing
Oil & Gas
-74°C (-100°F) Highly critical applications (e.g.) semiconductor industry / electronic industry
-40°C (-40°F) E�ective point of use (e.g.) general industry (standard pressure dewpoint)
-20°C (-20°F) Specialist use including some breathing air applications
With �ow rates from 4-35 scfm, our range of lower �ow PROSFD
models provide a proven solution for compressed air drying
and are ideal for smaller point of use applications.
Designed to deliver optimum
performance in line with the highest
standards of air purity, meeting
the quality classes speci�ed in
ISO 8573-1: 2010 (see pg.14 for
further information on Air Quality
Classi�cations), PROSFD models
PD004 to PD035 are supplied as
standard with XA grade 0.01 micron
PROSFD can be
providing a �exible
solution to your
range of dryers is 100% function
This highly reliable, high e�ciency
tested prior to despatch and is
supplied with a DIN plug for a fast
and e�cient installation.
PROSFD | PD004 to PD035
supplied as standard
supplied as standard
0.01 Micron XA Pre-�lter
1 Micron X1 Dust Filter
Serviceability Ease of service is foremost to the PROSFD design - desiccant
columns are easily removed, allowing access to desiccant cartridges for quick
and e�cient change out.
Reliability The PD004 – PD035 design incorporates highly reliable 12 VDC
solenoid control valves which operate diaphragm exhaust valves. The control
valves are set to be ‘normally closed’, a fail safe that ensures that the dryer will
still provide compressed air – even in the event of a power failure.
Energy Efficient Design Energy management features are built-in into
PROSFD’s LED Controller (supplied as standard). The compressor can be linked
to the energy management contacts, isolating the purge �ow during periods
of low demand for e�cient use of compressed air.
LED Controller Supplied as Standard Both smaller and larger �ow
models come with an LED Controller, providing continuous updates on dryer
performance via an intelligent built-in central processing unit (CPU). The
LED Controller illuminates to alert in the event of low power faults, controller
faults, drain valve faults, solenoid failures and when service intervals have been
reached. An external alarm process is built-in o�ering total security and peace
Low Cost of Ownership
optimum performance and �nancial bene�ts. Features such as an integral
Walker Filtration’s dryers are designed to deliver
electronic drain, service interval indication and integrated condensate